Casing for a measuring instrument



FIG. 1 is a front left side isometric view of a casing for a measuring instrument in accordance with the new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the drawings illustrate portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for a casing for a measuring instrument, as shown and described. 